Sorry Serko obviously my source was wrong, but with 5 F100s all configured in 108Y that would suggest a total of 1080 seats available per rotation.
4 rotations per day 4320 available seats and 3000 bookings per day would be a load factor of about 70%.
Even accounting for the jet which has been impounded, the leased in 737 more than covers those 'lost' seats.